<!DOCTYPE html>
<html lang="zh-CN">
<head>
	<meta charset="UTF-8">
	<title>01-this执行问题</title>
	<link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet">
	<script src="http://static.web.sdo.com/chuanshi/common/react.development.js"></script>
	<script src="http://static.web.sdo.com/chuanshi/common/react-dom.development.js"></script>
	<script src="http://static.web.sdo.com/chuanshi/common/babel.min.js"></script>
</head>
<body>
	<div class="container">
		<div id="app"></div>
	</div>
</body>
</html>
<script type="text/babel">
	class App extends React.Component{
		constructor(props){
			super(props)
			this.state={num:0}
			this.incrementEvent=this.incrementEvent.bind(this)
		}
		incrementEvent(){
			this.setState(state=>({num:state.num+1}))
		}
		render(){
			return (
				<div className="rows" style={{padding:'40px'}}>
					<h4>当前数值{this.state.num}</h4>
					<div className='btn btn-primary' onClick={this.incrementEvent}>点击加1</div>
				</div>
			)
		}
	}
	ReactDOM.render(<App/>,document.getElementById("app"))
</script>